high-chromium hlau

High chrome cam khwb cia hlau yog cov ntawv luv ntawm siab chrome dawb abrasion cam khwb cia hlau, yog ib qho kev ua tau zoo thiab kev saib xyuas tshwj xeeb rau cov khoom siv; Nws yog ntau dua li alloy steel hnav tsis kam, ntau dua li cov dav hlau cam khwb cia hlau toughness, lub zog, nws kuj muaj qhov kub thiab txias tsis kam thiab corrosion kuj, nrog rau kev tsim khoom yooj yim, tus nqi nruab nrab, thiab paub tias yog ib qho zoo tshaj plaws niaj hnub abrasive. hnav cov ntaub ntawv.
High chrome cam khwb cia hlau yog lub thib peb tiam ntawm hnav-resistant khoom tsim tom qab zoo tib yam dawb cam khwb cia hlau nickel hard cam khwb cia hlau. Vim yog cov yam ntxwv ntawm high chromium cam khwb cia hlau nws tus kheej, siab chromium cam khwb cia hlau muaj ntau dua toughness, siab kub zog, tshav kub tsis kam thiab hnav tsis kam tshaj li qub cam khwb cia hlau. High chrome cam khwb cia hlau tau raug qhuas tias yog qhov zoo tshaj plaws niaj hnub hnav cov khoom siv, thiab tau siv dav.
Qhov zoo hnav tsis kam ntawm siab chromium cam khwb cia hlau feem ntau yog nyob ntawm nws lub koom haum matrix thiab hom thiab faib cov yam ntxwv ntawm carbide.
High chrome cam khwb cia hlau yog ntau yam alloy nrog Fe, Cr thiab C raws li cov khoom siv yooj yim. Lub matrix ntawm cov tshiab solidified high-chromium cam khwb cia hlau yog cov austenite, uas yog ruaj khov tom qab cua sov mus rau ib tug ntau dua kub thiab saturated los ntawm cov ntsiab lus xws li C thiab Cr. Thaum qhov kub thiab txias, qhov kev hloov pauv ntawm austenitic yuav tshwm sim. Nyob rau hauv ib txwm muaj mob, siab chrome cam khwb cia hlau nthuav qhia lub koom haum multiphase nrog feem ntau austenite. Cov cam khwb cia hlau ntawm cov ntaub so ntswg no yog siv los ntawm qhov kub siab los muab kev ua si tag nrho rau lub peev xwm ntawm cov khoom nws tus kheej.
High chromium cam khwb cia hlau yog chromium system dawb cam khwb cia hlau nrog chromium ntsiab lus ntawm 12% thiab 28%. Vim yog qhov loj ntawm chromium, M3C carbide hauv lub qhov ncauj dawb hlau ua M7C3 carbide. Qhov no alloy carbide nyuaj heev, muab siab chromium cam khwb cia hlau zoo hnav tsis kam. Ntawm qhov tod tes, M7C3 carbide yog cais nyob rau hauv pas nrig thaum lub sij hawm solidification, uas txhim kho lub toughness ntawm siab chromium cam khwb cia hlau rau ib tug tej yam kev mob.

Kev siv tus qauv siab chromium cam khwb cia hlau hauv Asmeskas yog ASTMA532M, BS4844 rau Tebchaws Askiv, DIN1695 rau Lub Tebchaws Yelemees thiab NFA32401 rau Fabkis. Nyob rau hauv lub qub Soviet Union, Russia tsim 12-15% Cr, 3-5.5% Mn, phab ntsa thickness ntawm 200mm pob zeb hauv ob sab phlu board, thiab tam sim no siv lub ҐOCT7769 tus qauv. Tshwj xeeb, nws tsim nyog hais tias nyob rau hauv ib puas xyoo dhau los, Tebchaws Meskas tau ua haujlwm zoo rau kev tiv thaiv kev sib tsoo dawb cam khwb cia hlau. Xyoo 1928, lub tuam txhab thawj zaug tau tsim cov nickel nyuaj cam khwb cia hlau, uas thawb cov cuab yeej tiv thaiv kev hnav cam khwb cia rau qhov siab uas tsis tau muaj dua. Xyoo 1974, "Tsis Paub 1" thiab "Tsis Paub 2" tau tshwm sim ntawm Dusseldorf exhibition. Ntawd yog, classic high chrome resistant cam khwb cia hlau 153 (Cr15Mo3) thiab 1521 (Cr15Mo2Cu)